Herod the Great's Fortified Palace

King Herod the Great built his magnificent fortified palace to provide protection for Jerusalem's Upper City. It also guarded the west side of the city along with Herod's three towers. Just like Herod's Temple, his Palace was constructed on a platform, about 1000 feet (from north-south), and 180 feet (from east-west). The Palace consisted of 2 main buildings, each with its banquet halls, baths, and accommodations for hundreds of guests. It was surrounded with groves of trees, canals, and ponds studded with bronze fountains.

Link: https://bible-history.com/sketches/herod-the-greats-fortified-palace